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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A292810 G.f. A(x) satisfies: A( 2*x - A(x) - x^2 ) = 2*x - A(x).

Table of values

n a(n)
1 1
2 1
3 4
4 28
5 264
6 2992
7 38496
8 544464
9 8298080
10 134500672
11 2297361024
12 41077857152
13 765073498368
14 14786330691072
15 295652808207360
16 6101427222041856
17 129707991377671680
18 2835915576534111232
19 63683889838128080896
20 1467174199736163264512
21 34643692576697214742528
22 837694231078769706999808
23 20727017363846896783998976

List of values

[1, 1, 4, 28, 264, 2992, 38496, 544464, 8298080, 134500672, 2297361024, 41077857152, 765073498368, 14786330691072, 295652808207360, 6101427222041856, 129707991377671680, 2835915576534111232, 63683889838128080896, 1467174199736163264512, 34643692576697214742528, 837694231078769706999808, 20727017363846896783998976]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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